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31 lines
474 B
31 lines
474 B
const XHR = require("./polling");
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const JSONP = require("./polling-jsonp");
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/**
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* Export transports.
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*/
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module.exports = exports = {
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polling: polling,
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websocket: require("./websocket")
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};
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/**
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* Export upgrades map.
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*/
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exports.polling.upgradesTo = ["websocket"];
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/**
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* Polling polymorphic constructor.
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*
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* @api private
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*/
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function polling(req) {
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if ("string" === typeof req._query.j) {
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return new JSONP(req);
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} else {
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return new XHR(req);
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}
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}
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